Steam-generator



(No Model.) 2 Sheets-Sheet 1.

D. H. MGOARTY.

STEAM GENERATOR.

No. 366,496. Patented July 12,1887.

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%M 671 y (an (No Model.) 2 Sheets-Sheet 2.

D. H. McGARTY,

STEAM GENERATOR. v N0. 366,496. Patented July 12, 1887.

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NITED STATES PATENT OFF CE.

DAVID H. MOOARTY, OF ST. LOUIS, MISSOURI.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 366,496, dated July 12, 1887.

Application filed February 16, 1857. Serial No. 227,810. (No model.)

To aZZ whom it may concern.-

Be it known that I, DAVID H. MoOARTY, of the city of St. Louis, in the State of Missouri,

have invented certain new and useful Improvements in Steam-Generators, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, and in which Figure I is a longitudinal section through my improved generator, taken on line I I, Fig. II. Fig. II is a front elevation, part in section and part broken away. Fig. III is an enlarged detail View showing one of the removable plugs to allow access to the watertubes. Fig. IV is a similar view showing the removable plug for reaching the inner ends of the water-pipes at the elbows. Fig. V is an enlarged detail view illustrating one of the supports of the inner ends of the water-pipes. Fig. VI shows a means for securing the circulating-tubes to the water-chamber, consisting in tapering the tubes, as shown at 28, and then enlarging or expanding the ends, as shown at 29.

My invention relates to an improvement in boilers for generating steam; and myinvention consists in features of novelty, hereinafter fully described, and pointed out in the claims.

Referring to the drawings, 1 represents the walls ofthe furnace, within which is a fire-box, 2, a bridgewall, 3, and a pedestal or support, 4, for sustaining the inner ends of the waterpipes.

In the front part of the furnace is a waterchambcr, 5, extending from a steam-chamber, 6, above the furnace to near the fire-box, as shown in Figs. 1 and II. This chamber is composed of an iron shell, preferably strengthened by connectingbolts. The steam chamber or reservoir 6 communicates with the upper end of the water-chamber 5, as shown at S.

9 represents lower water-pipes,communicating with the lower part of the chamber 5 at their outer ends, and connected at their inner ends by means of short vertical pipes 10 to the inner ends of similar pipes,11. The outer ends of pipes 11 communicate withthe upper part of the chamber, as shown. The inner ends of the pipes 9 and 11 are connected to the pipes 10 by means of elbows 12,which are provided with removable plugs 13, (see Figs. I and IV,) to afford means of reaching the pipes 9 and 11, for the purpose of cleaning them.

The interior of the pipes may be reached at their front ends also through means of plugs 14. in the front wall of the chamber, 5, the plugs being located opposite the tubes. (See Figs. I, II, and III.) The inner ends of the pipes 9 and 11 are supported by frames 16, (see Figs. I and V,) the frames consisting of a series of sections, 17, the lower section having a base, 18, that rests upon the pedestal 4, and having a semicircular socket, 19, on its upper end, as shown in Fig. V, to receive a pipe, the next section having a semicircular socket to fiton said pipe, and having two semicircular sockets, 20, on its upper end to receive two pipes, the next section having semicircular sockets on its lower. end to fit over said two pipes, and a. semicircular socket, 21, on its upper end to receive a pipe, and so on up, there being a sufficient number of these sections to support the entire series of pipes 9 and 11.

The water enters the chamber 5 through a supply-pipe, 22, and,entering the lower pipes, 9, circulates, as the water is heated, through said pipes, through the pipes 10, through the pipes 11 into the upper part of the chamber 5, and the steam passes through the opening Sin the steam-chamber 6. The products of combustion pass from the fire-box back through the colnbustioil-chamber, beneath a partition, 23, and over the pedestal 4, up through a back flue, 24, into the combustion-chamber above the partition 23, and out through a smokestack, 25, which surrounds the StGillll-Ollitllr her 6. As the heat and products of combustion pass from the fire-box to the flue they circulate through the spaces between the pipes, as indicated by the arrows in Fig. I,

thus heating the pipes generating the steam.

I prefer to incline the pipes and the partition 23, as shown in Fig. I.

\Vith a generator thus made I obtain a large amount of heatingsurface with a cheap construction, and use but a small amount of water.

I claim as my invention 1. In a steam-generating furnace, the combination, with a water-chamber, 5, of the pipes 9 and 11, communicating therewith at their forward extremities and with each other at their rear extremities, and means for supporting the rear extremities of' each of said pipes independently of the others, said means consisting of a series of triangular frames, each having at each of its angles a semicircular socket, so arranged that when two of said frames are placed together they will form hetween them circular openings for the reception of the pipes, substantially as set forth.

2. The combination, with a series of pipes, of means for supporting and holding them at the proper distances asunder, consisting of a series of triangular frames, each having at each of its angles a semicircular socket, so arranged that when two of said frames are placed together they will form between them circular openings for the reception of the pipes, substantially as set forth. t

3. In a steam-generating furnace, the combination, with a series of pipes and the pedestal 4, of the bottom triangular section 17, having the straight base 18 and a semicircular socket, 19, at top for the reception of a pipe, and the superposed triangular sections 17, each having semicircular sockets at each of its angles, so arranged that said braces will rest upon each other and embrace the pipes 30 between them, substantially as set forth.

DAVID H. MCCARTY.

In presence of-- GEO. H. KNIGHT, EDW. S. KNIGHT. 

